High isolation diplexer using quarter-wavelength resonator filter

被引：40

作者：

Cheng, F. ^{[1
]}

Lin, X. Q. ^{[1
,2
]}

Zhu, Z. B. ^{[2
]}

Wang, L. Y. ^{[1
]}

Fan, Y. ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Elect Engn, EHF Key Lab Fundamental Sci, Chengdu 611731, Peoples R China

[2] China Acad Space Technol, Natl Key Lab Space Microwave Technol, Xian 710000, Peoples R China

来源：

ELECTRONICS LETTERS | 2012年 / 48卷 / 06期

基金：

美国国家科学基金会;

关键词：

SPLIT-RING RESONATORS; DESIGN; LINE;

D O I：

10.1049/el.2012.0031

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A microstrip diplexer with very high isolation is presented. The diplexer consists of two compact filters with quarter-wavelength resonators coupled by the metallised vias. Each metallised via is inductive and behaves as a K-inverter. This type of filter has two adjustable transmission zeros on each side of the passband, which can be shifted by changing the coupling coefficient between the source and load. By locating the transmission zero of one channel at the passband of the other channel, very high isolation of the diplexer can be achieved. Simulated results of the fabricated diplexer agree well with measured results.

引用

页码：330 / 331

页数：2

共 9 条

[1] Adaptive synthesis and design of resonator filters with source/load-multiresonator coupling [J].

Amari, S ;

Rosenberg, U ;

Bornemann, J .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2002, 50 (08) :1969-1978

[2] Diplexer using composite right-/left-handed transmission line [J].

An, J. ;

Wang, G. -M. ;

Zhang, C. -X. ;

Zhang, P. .

ELECTRONICS LETTERS, 2008, 44 (11) :685-U38

[3] Complementary split ring resonators for microstrip diplexer design [J].

Bonache, J ;

Gil, I ;

García-García, J ;

Martín, E .

ELECTRONICS LETTERS, 2005, 41 (14) :810-811

[4] Substrate Integrated Waveguide Loaded by Complementary Split-Ring Resonators for Miniaturized Diplexer Design [J].

Dong, Yuandan ;

Itoh, Tatsuo .

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 2011, 21 (01) :10-12

[5]

LIN YS, 2004, URSI INT EL THEOR S, P567

[6] Wide-band low-loss high-isolation microstrip periodic-stub diplexer for multiple-frequency applications [J].

Strassner, B ;

Chang, K .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2001, 49 (10) :1818-1820

[7] UMTS diplexer design using dual-mode stripline ring resonators [J].

Xu, W.-Q. ;

Ho, M.-H. ;

Hsu, C. G. .

ELECTRONICS LETTERS, 2007, 43 (13) :721-722

[8] Compact diplexer based on double-sided parallel-strip line [J].

Xue, Q. ;

Chen, J. -X. .

ELECTRONICS LETTERS, 2008, 44 (02) :123-124

[9] High Isolation and Compact Diplexer Using the Hybrid Resonators [J].

Yang, Tao ;

Chi, Pei-Ling ;

Itoh, Tatsuo .

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 2010, 20 (10) :551-553

← 1 →